adjust line height of export xlsx

lib/tallty_import_export/export.rb

@@ -80,10 +80,10 @@ module TalltyImportExport
         if respond_to?(:first_header)
           row_index = Axlsx.col_ref(headers.size - 1)
           sheet.merge_cells("A1:#{row_index}1")
-          sheet.add_row [first_header], style: title1, height: 40
+          sheet.add_row [first_header], style: title1, height: 30
         end
 
-        sheet.add_row headers.map{|header| header[:name]}, style: title2, height: 39
+        sheet.add_row headers.map{|header| header[:name]}, style: title2, height: 25
 
         last_row = nil
         merge_column_hash = {}
@@ -126,7 +126,7 @@ module TalltyImportExport
     def process_options options = {}
       options = options.with_indifferent_access
 
-      @row_height ||= options.delete(:row_height) || 35
+      @row_height ||= options.delete(:row_height) || 25
       @width ||= (options.delete(:width) || 20).to_f
       @filename ||= options.delete(:filename)
       @group_by ||= options.delete(:group_by)